The printer arm moves around building up layers, says one of those involved in the country's first 3D printed show home.
From there the desired textures can be applied to the surfaces ... the first video embedded below shows the ‘dual disk polar printer’ fitted with a crazy five-extruders-into-one-nozzle mixing ...
For the latter, many have turned to 3D printers to create more rock-like ... For small manufacturers, typically the way that the rock texture is mimicked is by somehow incorporating sand ...